#
# while True:
#     s = input("请输入学生成绩：")
#     if s == 'N':
#         break
#     elif int(s) >= 90:
#         print("学生成绩优秀")
#     elif int(s) >= 80:
#         print("学生成绩良好")
#     elif int(s) >= 70:
#         print("学生成绩中等")
#     elif int(s) >= 60:
#         print("学生成绩及格")
#     elif int(s) >= 0:
#         print("学生成绩不及格")
# print("运行完成，欢迎下次使用！")
#
# for i in range(101):
#     if i % 2 == 1:
#         pass
#     else:
#         continue
#     print(i)


# for i in range(101):
#     if i % 2 == 0:
#         continue
#     print(i)

# # 1-100质数
# for i in range(2, 101):
#     num = 0
#     for j in range(2, i):
#         if i % j == 0:
#             break
#         num = j
#     if i > num + 1:
#         continue
#     print(i)
